Simultaneous Determination of Six Major Constituents of the Herbal Formula Insampaedok-san Using HPLC-PDA

Table 4

Recovery levels for the six marker compounds (𝑛=5).

Compound	Original mean level (μg mL^−1)	Spiked level (μg mL^−1)	Detected mean level (μg mL^−1)	Recovery mean (%)	RSD (%)
1		4.00	29.03	103.19	1.62
	24.91	10.00	34.92	101.33	1.42
		20.00	45.42	102.57	0.73
2		2.00	9.53	104.43	0.99
	7.44	4.00	11.58	103.34	0.82
		8.00	15.40	99.50	3.89
3		20.00	124.26	99.16	1.81
	104.43	50.00	157.15	105.46	0.63
		100.00	210.39	105.96	0.31
4		3.00	17.56	100.46	1.04
	14.55	8.00	22.81	103.28	0.47
		15.00	28.93	95.88	1.34
5		10.00	81.39	95.32	1.79
	71.86	35.00	106.78	99.78	0.92
		70.00	143.45	102.27	0.33
6		6.00	39.11	101.53	1.09
	33.02	15.00	46.91	92.62	0.73
		30.00	62.09	96.90	0.21